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Comparison of cold air, ultrasonic mist, and methacholine inhalations as tests of bronchial reactivity in normal and asthmatic children

AsthmaAllergyAsthmatic ChildrenRespiratory DiseasesUltrasonic MistPediatricsPediatric Lung DiseaseBronchial ReactivityAir PollutionMedicinePulmonary DiseaseInhalation Toxicology